EP0910309B1 - Prosthetic repair of body passages - Google Patents
Prosthetic repair of body passages Download PDFInfo
- Publication number
- EP0910309B1 EP0910309B1 EP97927277A EP97927277A EP0910309B1 EP 0910309 B1 EP0910309 B1 EP 0910309B1 EP 97927277 A EP97927277 A EP 97927277A EP 97927277 A EP97927277 A EP 97927277A EP 0910309 B1 EP0910309 B1 EP 0910309B1
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- EP
- European Patent Office
- Prior art keywords
- graft
- prosthesis
- diameter
- tubular
- annular
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2/06—Blood vessels
- A61F2/07—Stent-grafts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
- A61F2/2412—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body with soft flexible valve members, e.g. tissue valves shaped like natural valves
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
- A61F2/2427—Devices for manipulating or deploying heart valves during implantation
- A61F2/2439—Expansion controlled by filaments
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
- A61F2/89—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure the wire-like elements comprising two or more adjacent rings flexibly connected by separate members
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2/954—Instruments specially adapted for placement or removal of stents or stent-grafts for placing stents or stent-grafts in a bifurcation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2/06—Blood vessels
- A61F2002/065—Y-shaped blood vessels
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2/06—Blood vessels
- A61F2002/065—Y-shaped blood vessels
- A61F2002/067—Y-shaped blood vessels modular
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2/06—Blood vessels
- A61F2/07—Stent-grafts
- A61F2002/075—Stent-grafts the stent being loosely attached to the graft material, e.g. by stitching
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30317—The prosthesis having different structural features at different locations within the same prosthesis
- A61F2002/30327—The prosthesis having different structural features at different locations within the same prosthesis differing in diameter
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30476—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism
- A61F2002/30505—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism spring biased
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2002/826—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents more than one stent being applied sequentially
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2002/9505—Instruments specially adapted for placement or removal of stents or stent-grafts having retaining means other than an outer sleeve, e.g. male-female connector between stent and instrument
- A61F2002/9511—Instruments specially adapted for placement or removal of stents or stent-grafts having retaining means other than an outer sleeve, e.g. male-female connector between stent and instrument the retaining means being filaments or wires
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0014—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
- A61F2250/0039—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in diameter
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Gastroenterology & Hepatology (AREA)
- Pulmonology (AREA)
- Prostheses (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Surgical Instruments (AREA)
Abstract
Description
- The present invention relates to devices that are retained inside a body passage and in one particular application to vascular stents for the repair of arterial dilations known as aneurysms.
- As a result of arteriosclerosis, portions of blood vessels may become weakened and extremely dilated. These dilated vessels may be treated by bridging the dilation or weakened extended area using a vascular tubular prosthesis. In this way the diseased portion of the vessel is effectively isolated from the pressure inside blood vessels.
- Vascular tubular prostheses may be inserted into the diseased portion of the vessel by surgically opening the vessel and suturing the prosthesis into position. However, it may be preferred to insert the prosthesis from a remote opening, such as the femoral artery, adjacent the groin, using a catheter system. This is because the elimination of the need to open a major body cavity may diminish the potential surgical complications.
- Generally it is desirable to insert the prosthesis, using a catheter, in a collapsed or compressed condition and then to expand the prosthesis when in position. One reason for this is that it is desirable to avoid substantially occluding the blood flow during the insertion process. Therefore, by collapsing the prosthesis, the prosthesis may be readily positioned inside the vessel, in some cases without substantially occluding the blood flow.
- There are generally two techniques for expanding the prosthesis once in position at the location to be repaired. One technique uses a malleable metal prosthesis which has two configurations. One configuration has a relatively smaller diameter and the other has a relatively radially expanded configuration contacting and securing to a neck portion on either side of the diseased vessel region. The prosthesis may be a malleable metal ring which may be expanded by a balloon catheter to set the prosthesis in its expanded diameter, inside the neck portion, proximate to the diseased portion of the vessel.
- Another general approach is to use a self-expandable prosthesis which may be compressed against a resilient bias. Once in position, the prosthesis is allowed to resiliently expand into contact with the vessel wall.
- While a wide variety of solutions have been proposed to the problem of effectively bypassing diseased tissue, various existing prosthetic device designs may have certain deficiencies. For example, in some cases, the neck portion on either side of the diseased vessel portion may be relatively short. -This makes it difficult for prosthetic devices to adequately engage the narrow neck on either side of the aneurysm.
- In addition, some of the existing prostheses may cause blockage of the blood flow during insertion of the prosthesis, which can have physiologically adverse affects. Still another issue is that many existing prostheses do not adequately seal against the internal surface of a vessel, allowing leakage of blood past the prosthesis into the region between the prosthesis and the weakened blood vessel. The consequences of this type of leakage can be traumatic. In some designs, the device may not be adaptable to non-circular or irregularly shaped neck regions.
- An aortic graft, a device and a method for performing an intraluminal abdominal aortic aneurysm repair has been described in US-A-4 562 596. The aortic graft comprises a flexible hollow, tubular material having disposed along its major axis a plurality of parallel struts. The struts having angled hooks with barbs at their upper end. A flexible ring is located at the upper end of the graft. The ring may be fabricated of flexible, resilient plastic or rubber which is in the compressed, or partially open state prior to positioning in a damaged artery. The proximal attachment of the graft to the inside wall of the aorta is accomplished by the hooks which are located at the upper end of each strut. Each hook has a barb located at the lower end of the hook so as to inhibit upward movement which might tend to dislodge the graft after it is positioned and attached to the aorta wall. Once in place, the ring will spring open and snug up against the walls of the aorta covering the punctures in the wall made by the hooks. It is mentioned that the graft could also be made without the resilient ring.
- US-A-5 123 917 relates to an expandable intraluminal vascular graft which includes a flexible cylindrical inner tube and a plurality of separate scaffold member mounted on an outer periphery of the inner tube. The scaffold members are expandable, ring-like and provide circumferential rigidity to the graft. The scaffold members are deformed beyond their elastic limit when the graft is expanded to the wider graft diameter. In one embodiment the scaffold member is ring-like and includes a plurality of angled straight sections which are connected at ends. In another embodiment the scaffold member is an open ring.
- An artificial graft and implantation method is described in WO 89/08433. In particular, a hollow graft comprises at both ends a staple which is collapsible from an initial diameter to a second smaller diameter. In an embodiment the staple comprises a plurality of V-shaped support members which are connected to each other in a generally circular arrangement. Each staple comprises a plurality of hooks which inplace penetrate into the wall of a lumen.
- US-A-5 151 105 relates to a collapsible vessel sleeve implant. The sleeve ends each include a collapsible circular stent or annular balloon affixed thereto. The sleeve is adapted to be collapsed and maintained in that collapsed state for introduction into an aorta. The circular stents or annular balloons at the sleeve ends can be adjusted to be perpendicular to the aorta axis and are urged into the graft wall into sealing engagement with the aorta lumen. After positioning sleeve implant may be stabilized utilizing a tacking system operated from within the graft, to drive barbed ends of tacks through the sleeve inner wall and into the artery wall.
- Still another issue with some known prostheses is that they may require the hospital to stock a variety of prosthesis sizes for different situations and different patient physiologies. Also some designs may require that the prosthesis be custom fitted for each particular patient.
- Another difficulty may arise with regard to accurately positioning the prosthesis once it has been expanded. In some cases inaccurate positioning may be problematic. Similarly, in many existing prostheses it is possible that the prosthesis may be dislodged from its desired position so that it does not effectively accomplish its function of protecting the weakened vessel.
- Thus, for these and other reasons, there is a continuing need for enhanced solutions to the problem of repairing diseased vessels and in general to the problem of effectively securing prosthetic devices to the internal walls of body passages.
- The present invention relates to a prosthesis according to claim 1.
- The details of one or more embodiments of the invention are set forth in the accompanying drawings and the description below. Other features, objects and advantages of the invention will be apparent from the description and drawings, and from the claims.
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- Fig. 1 is generalized top plan view of a clamping ring in accordance with one embodiment of the present invention;
- Fig. 2 is a reduced, perspective view of the embodiment of Fig. 1 in place within an idealized body passage;
- Fig. 3 is a front elevational view of a clamping ring before insertion into a body passage;
- Fig. 4 is a front elevational view of a clamping ring after introduction into a body passage;
- Fig. 5 is a side elevational view of the embodiment shown in Fig. 4;
- Fig. 6 is a front elevational view of a prosthesis with an application apparatus;
- Fig. 7 is a cross-sectional view taken generally along the line 7-7 in Fig. 6;
- Fig. 8 is an enlarged, partially sectioned view of the retention device shown in Fig. 6;
- Fig. 9 is a cross-sectional view taken generally along line 9-9 in Fig. 8;
- Fig. 10 is a cross-sectional view taken generally along line 10-10 in Fig. 8;
- Fig. 11 is an enlarged front elevational view of a prosthesis retained by a retention loop;
- Fig. 12 is an enlarged, front elevational view of a portion of the retention loop;
- Fig. 13 is a front elevational view of another embodiment of the prosthesis and insertion device;
- Fig. 14 is an enlarged view of the prosthesis shown in Fig. 13;
- Fig. 15 is an enlarged cross-sectional view of the embodiment shown in Fig. 11 prior to insertion into a body passage;
- Fig. 16 is a cross-sectional view of the embodiment shown in Fig. 13 prior to insertion into a body passage;
- Fig. 17 is a front elevational view of another embodiment in place within a sectioned aortic bifurcation;
- Fig. 18 is a front elevational view of still another embodiment in place within a sectioned aortic bifurcation;
- Fig. 19 is an enlarged front elevational view of a module shown in Fig. 18;
- Fig. 20 is a cross-sectional view taken generally along the line 20-20 in Fig. 19;
- Fig. 21 is a cross-sectional view taken generally along the line 21-21 in Fig. 19;
- Fig. 22 is a front elevational view corresponding to Fig. 14 showing an alternate embodiment;
- Fig. 23 is a partially sectioned front elevational view of another embodiment; and
- Fig. 24 is a front elevational view of a prosthetic device positioned within a sectioned heart.
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- Referring to the drawing wherein like reference characters are used for like parts throughout the several views, an annular,
resilient clamping ring 30 may be formed by a wrapping a single length of wire around the mandrel (not shown) having a central axis "C" and then securing the strands into abundle using ties 34. Theties 34 may be formed from surgical suture material. - The number of coils or
strands 32 can be varied according to the wire utilized and the particular application involved. However, in one embodiment, the number ofstrands 32 utilized is approximately 8 to 10 as shown in Fig. 10. However, the number of coils orstrands 32 may vary from as few as 2 to as many as 100 or possibly more. - While a variety of different wire diameters may be utilized, the
individual strands 32 may have a diameter of from about .05 to 1 mm. In one advantageous embodiment awire strand 32 diameter of about .1 mm may be used. - The
strands 32 may be made of any highly resilient metal or plastic material, including a nickel titanium alloy such as Nitinol. Generally the resilient or superelastic or martensitic form of Nitinol is utilized. - The diameter DK of the
ring 30 is subject to considerable variation depending on the particular body passage involved. In connection with an aortic vascular graft, a ring diameter of about 30 mm may be adequate and in other situations ring diameters (DK) of from about 6 to 50 mm may be suitable. In some embodiments, a ring diameter of 13 mm is preferred. - Referring to Fig. 1, the
ring 32, before compression, may have a diameter, DK, which is considerably greater than the diameter, DR, of thebody passage 36 to be treated. As indicated in Fig. 1, two diametrically opposed points "A" on theundeformed ring 30 may be deflected towards one another. As indicated by the arrows, this causes thering 30 to fold along its diametric axis "B". In this configuration, thering 30 may be inserted into thebody passage 36 in a reduced cross-sectional configuration. - As a result of the folding along the diametric axis "B," the
loops 38, which include the folded tips "A," extend proximally relative to the points "B" which are along the diametric axis of folding. As used herein, the term "proximal" refers to the direction upstream with respect to blood flow and the term "distal" refers to the direction downstream with respect to blood flow. - Once in position inside the
body passage 36, thering 30 makes continuous contact with theinternal vessel 36 wall even though thering 30 may take a generally sinusoidal shape. To a first approximation, the height H, indicated in Fig. 2, is a quadratic function of the radial compression. - The smallest permissible bending diameter without plastic deformation, DB, shown in Fig. 2, depends on the material, the thickness of the clamping
ring 30 and theindividual strands 32 which may make up thering 30. According to Hooke's law, thestrands 32 can be regarded as parallelly connected springs whose deflection characteristic values are additive and whose individual low radial tension forces add up to a total tension force which depends on the number ofstrands 32. When theentire ring 30 is compressed, eachindividual strand 32 has a bending diameter approximately corresponding to the minimum bending diameter DB of theindividual strand 32. - As an approximation, the minimum bending diameter DB is approximately ten times the wire diameter. This suggests that the
ring 30 wire diameter be kept low. However, the ring's clamping force on thebody passage 36 is a function of its diameter, suggesting conversely that the wire diameter be increased. This tradeoff can be optimized by using a plurality ofstrands 32, whose diameter controls the minimum bending diameter, to form a bundle whose composite diameter controls the clamping force. Thus a clampingring 30 with a high tension force can be shaped to a relatively small compressed configuration. After being released from a catheter, for example having a conventional diameter of from 4 to 6 mm, thering 30 may return to its original shape and by means of sufficient tension force, securely presses thering 30 along the wall of abody passage 36. - The
prosthesis 40 includes anannular ring 30 and agraft 42, as shown in Fig. 3. Thegraft 42 is tubular and may be made of a fabric or film secured on one end to thering 30. Thegraft 42 may have a diameter Dp which is smaller then the diameter DK of the clampingring 30. Due to the connection between the clampingring 30 and the end of thegraft 42, there is a diameter DKP at the junction point between the clamping ring and thegraft 42. The clampingring 30 may expand the end of thetubular graft 42 to a stop or deformation limit, after which no further expansion occurs. Thus, thering 30 may expand upon thegraft 42 in the region proximate to thering 30 so that the diameter of thegraft 42 gradually tapers in theregion 44 down to a relativelyconstant diameter region 46, terminating in afree end 47. Alternatively, thegraft 42 could be preformed in the flared shape shown in Fig. 3. - Any one of a variety of fabric materials compatible with human implantation may be utilized to form the
graft 42. For example, thegraft 42 may be formed of flexible woven or knitted textiles made of Dacron, Teflon, or other materials. It is advantageous if thetubular graft 42 is made of a material which does not change its circumference readily. It is also advantageous if theportion 46 of thegraft 42 has a diameter DP which is approximately the same as the diameter DR of thebody passage 36 to be repaired. - The
ring 30 can be connected with theregion 44 by means of sutures or bonding. It is advantageous if the clampingring 30 is arranged on the interior surface of thegraft 42 so that when thering 30 extends against thebody passage 36 wall, thegraft 42 intervenes between thepassage 36 and thering 30. Thus, it may be advantageous that the diameter DK of thering 30 be considerably greater than the diameter of theportion 46 of thegraft 42. - Referring to Fig. 4, the
prosthesis 40 may be positioned within theabdominal aorta 48 proximate to the leftrenal artery 50 and the rightrenal artery 52. Theloops 38 extend past thearteries portion 53 is located just distally of the openings to thearteries arteries annular ring 30 proximate thereto because of the generally C-shaped configuration in cross-section of thering 30. - Because of this configuration, the
ring 30 may be secured to a substantiallyundeformed neck region 54 of relatively short height bounding ananeurysm 55. This is because at least part of thering 30 extends proximally beyond theneck 54 without in any way affecting the flow through thearteries clamping ring 30 never completely expands to its unfolded configuration (shown in Fig. 1), it is adaptable to irregularly configuredneck 54 cross-sections. - For example, if the
neck 54 is non-circular in cross-section, the sinusoidally shapedring 30, in compression, can adapt to the irregular body passage shape. By making thering 30 with an uncompressed diameter (DK) greater than the diameter of the body passage (DR) which it is designed to engage, a continuing resilient engagement occurs between thering 30 and thebody passage 36 which may continue even if the body passage becomes distended over time. This may occur regularly due to normally pulsing blood pressure or due to vasodilation over time. - Further by making the diameter of the ring 30 (DKP) greater than the diameter of the graft 42 (DP), the graft diameter in use will correspond closely to the compressed cross-sectional diameter (DK) of the
ring 30, in position within thebody passage 36. This lessens any unnecessary bunching of thegraft 42 around theneck 54. - Turning now to a method for positioning the
prosthesis 40 in a desired location within a passage, aretention device 56, shown in Fig. 6, may be secured to thering 30 on at least two diametrically opposed orientations so that thedevice 56 extends generally parallel to the axis of theprosthesis 40. Thedevices 56 may include apassage 58 in one end and abracket 60 which secures thedevice 56 to thering 30. Alternatively thepassage 58 may be replaced by wire restraining brackets (not shown). In somecases barbs 62 may be included on one end of thedevice 56. However, in many cases, thebarbs 62 may be unnecessary. - The
device 56 may be engaged by awire 64 which extends into thepassage 58 and by atube 66 which encircles thewire 64, as indicated in Fig. 7. Advantageously, thedevice 56 and thetube 66 are made of sufficiently rigid material that pushing against thedevice 56 by thewire 64 or thetube 66 results in displacement of theprosthesis 40 within thepassage 36. Thewire 64 may have a diameter of about .3 to 1 mm. - The
prosthesis 40 may be compressed to fit into thetubular catheter 68, for transferring the prosthesis from a remote entry point to the repair site. Thecatheter 68 may be inserted into an incision in the femoral artery, for example, and passed to a position within the abdominal aorta, for example, where one may wish to position theannular ring 30. Once in position, theprosthesis 40 may be pushed out of thecatheter 68 using thetubes 66. Particularly, thetubes 66 are extended inwardly from the exterior of the body by the surgeon while maintaining thecatheter 68 in a fixed position so that theprosthesis 40 is left in position as thecatheter 68 is backed away. If desired, thebrackets 60 may be made of X-ray opaque material such as platinum, iridium or gold to serve as an X-ray marker. - While the above described procedure for placing the
prosthesis 40 may be useful in some applications, it would be desirable to further facilitate accurate and controllable placement of theprosthesis 40 in a particular location. Once thering 30 is allowed to expand against the passage wall, re-positioning must be done against the resistant force of thering 30. Thus, it is advantageous to continue to confine thering 30 after theprosthesis 40 leaves thecatheter 68, until theprosthesis 40 is accurately positioned. To this end, aBowden tube 70 telescopically retains awire loop 72, as shown in Figs. 11 and 12. Theloop 72 extends axially through thetube 70, forms anannular ring 74 and passes through ahole 76 in the proximal free end of theBowden tube 72. At this point, the loopedend 78 of thewire loop 72 receives ablocking wire 80, where theloop 78 extends out of thehole 76. - Referring to Fig. 11, the
Bowden tube 70 extends along the exterior of theprosthesis 40 to a point proximate to theloops 38. Theannular ring 74 extends around the periphery of theloops 38 at a relatively central location along their length and is engaged ineyelets 82 secured to thering 30. In this way, theblocking wire 80 may be withdrawn axially, releasing the loopedend 78 so that thewire loop 72 may be withdrawn, releasing thering 30 and allowing it to spring open at a desired location. Theblocking wire 80 may return, inside theBowden tube 70, to the entry point or it may exit theBowden tube 70 through agap 71, as shown in Fig. 11. - Referring to Fig. 15, the
catheter 68 encircles theprosthesis 40 which in turn encircles a pair oftubes 66 withwires 64 extending through them. If necessary, aguide wire 104 may be included which may be used initially to guide the catheter to the desired location and to maintain a path for returning to the same location with additional elements, if necessary. TheBowden tube 70 with the loopedwires 72 and blockingwire 80 also extends inside thecatheter 68 between the catheter and theprosthesis 40. - In still another embodiment, a
retaining mechanism 84, shown in Figs. 13 and 14, retains theprosthesis 40 in a compressed configuration to accurately locate it at the desired position within a passage. Themechanism 84 may control aprosthesis 40' having a pair ofrings 30, connected by agraft 42, in a compressed position inside acatheter 68. Aguide wire catheter 86 extends axially through theprosthesis 40'. A plurality ofringlets 88 extend off of thecatheter 86. Each of theringlets 88 connects to wireloops 90 which in turn connect toeyelets 92 at the free ends of theloops 38. - Referring to Fig. 14, each of the
wire loops 90 slidably and releasably extends through theeyelet 92 and forms aloop end 94. Ablocking wire 96 extends through the loop ends 94. A portion of eachring 30 along its folding axis "B" is wrapped by awire loop 98 which is engaged on its free end by blockingwire 100. Thewire loop 98 may wrap around and over thering 30, over the outside of theguide wire catheter 86 and into the interior of thecatheter 86 through anopening 102. Each of therings 30 on opposed ends of thegraft 42 includes the same parts and may be operated in the same way. - Thus, to adjust the extent of folding or the proximal-distal height of the
rings 30 in the orientation shown in Fig. 14, it is simply necessary to pull outwardly on thewires 98 which may be connected together to asingle wire 103 that extends to the exterior of the patient. To decrease the height and to decrease the compression of thering 30, the tension on thewire loop 98 may be relaxed, allowing the natural spring forces of therings 30 to cause the bending of thering 30 to be relieved and the ring height to be reduced. - After the
catheter 68 is positioned in the desired location, the assembly may be ejected from the catheter using the techniques described previously. The amount of compression of thering 30 may be adjusted so that theapparatus 84 can be temporarily positioned at a desired location. If it is determined that the location is not precisely correct, the apparatus can be re-compressed, by operating theloops 98, to allow repositioning of theapparatus 84 to a new location. In this way, it is possible to selectively adjust the position of theprosthesis 40', even after the prosthesis has previously been released to engage the body passage. If an error is initially made, it is easy to reposition the prosthesis, as necessary. Once the prosthesis is located at the desired location, the blockingwires catheter 68. This allows theprosthesis 40' to expand, irreversibly. Thecatheter 86 may be removed thereafter. - If desired, each of the
loops 98 can be connected by an independent wire to the exterior of the patient. Or as described previously, thewires 98 may be connected so that only one single wire extends outwardly. - Referring now to Fig. 16, illustrating the catheter bundle for the embodiment illustrated in Figs. 13 and 14 prior to release from the
catheter 68, thecatheter 68 encircles theprosthesis 40'. In the interior of theprosthesis 40' is theguide wire catheter 86, with one or more ofwires 103 which may be used to control the position of the folded portion of the annular rings 30. Outside of theguide wire catheter 86 are a pair of wires corresponding to the blockingwires - In accordance with another embodiment of the invention, the
prosthesis 40 may be supplemented by one or more additional modules such as theprosthesis 106, shown in Fig. 17. Thesecond prosthesis 106 telescopically engages thefirst prosthesis 40 using anannular ring 30 which expands outwardly against the resistance provided by thegraft 42. Thesecond prosthesis 106 includes an upper annular ring 30' and a lower annular ring 30''. It is the upper annular ring 30' which engages thegraft 42 while the lower annular ring 30'' engages in thedistal neck 54b. Because the amount of telescopic extension of thesecond prosthesis 106 into thefirst prosthesis 40 may be adjusted, a wide arrangement of different vessel longitudinal sizes can be accommodated. - The
prosthesis 106 including a pair ofrings 30' and 30" may have a longitudinaltorsion preventing wire 31 as shown in Fig. 23. Thewire 31 may be wrapped around therings 30' and 30" to control torsion or twisting of theprosthesis 106 about its longitudinal axis and to provide additional longitudinal support. Thewire 31 is covered by thegraft 42, either by positioning thewire 31 in the interior of theprosthesis 106 or by weaving thewire 31 through agraft 42 made of fabric. If desired, one or moreadditional wires 31 may be provided around the circumference of therings 30' and 30". - The
second prosthesis 106 may be located inside the first prosthesis using theguide wire 104 which stays in position after all of the wires utilized to position the first prosthesis have been removed. Thereafter thesecond prosthesis 106 may be run back to the same location using theguide wire 104 which stayed in place after thefirst prosthesis 40 was positioned. - The
guide wire 104 maintains the opening of the graft as well. However, in practice the blood flow through theprosthesis 40 causes it to act like an open, expanded, windsock. Therefore, using the guiding action of theguide wire 104, thesecond prosthesis 106 can engage the interior surface of thegraft 42. Thus, the combination of the twoprostheses necks prosthesis 106 into theprosthesis 40. - The
prostheses mechanism 84, as shown in Fig. 22. Theprosthesis 106 may be inserted into the patient, already located within theprosthesis 40, using an additional set of blocking wires 96'. The blocking wires 96' extend through thelower loops 94 and through the interior of theprosthesis 40. In this way, theprosthesis 106 may be manipulated independently, adjustably telescoping within theprosthesis 40. In this case, thewires 98 and 98' may run separately to the exterior of the patient to facilitate independent manipulation of theprostheses - A prosthesis similar to those described above may also be used to provide a
bifurcated stent 120, shown in Fig. 18, which extends from theabdominal aorta 48 and its associatedneck 54a past thelower neck 54b and into the iliac orpelvic arteries prosthesis 40 as described above is provided for engagement with theneck 54a. Instead of theprosthesis 106 described previously, a specially configuredprosthesis 112 may be utilized next. Theprosthesis 112, shown in Fig. 19, may include aring 30 on its upper end and a pair ofrings 114 on its lower end. Therings 114 need not be compressed since they simply maintain the lower end of theprosthesis 112 in an open configuration. - As shown in Figs. 20 and 21, the upper end of the
prosthesis 112 may have a circular configuration of the type described previously. The lower end may have a double tubular configuration including a pair ofpassages 116 defined by aconnection 118 which extends axially along theprosthesis 112 to form twoseparate chambers 116 terminated by therings 114. Therings 114 may be oriented at an angle to the axis of theprosthesis 112 to allow easy entrance from theiliac arteries - A pair of
smaller diameter prostheses 120 are bilaterally inserted through eachiliac artery prosthesis 112. Particularly, the upper rings 30'' enter throughrings 114 and pass into the interior of thepassages 116 where they expand outwardly against thegraft 42. At the same time theother end 122 of eachprosthesis 120 engages theneck 54b at theiliac artery prostheses 120 may be inserted using the same guide wire utilized to position the previously positioned prostheses. However, theother prosthesis 120 must be positioned independently of that guide wire. For this purpose, x-ray proof materials may be utilized on the rings 30'' and 114 to facilitate location of therings 114 and passage through them by theprosthesis 120 which is inserted without the previously located guide wire. - With the apparatus and techniques described above, it should be apparent that the
prostheses prostheses annular ring 30 need never extend to its fully undeformed configuration, means that it is not necessary to stock a variety of different stents. Instead it is possible to have a relatively limited or even a single set of sizes which can be adapted to a variety of patient conditions. - Because of the fact that the
rings 30 have a C-shaped configuration in position in the body passage, it is possible to locate the prosthesis in a relativelynarrow neck 54 region. Since thering 30 remains in its compressed configuration in use, it adapts for short term and long term distension of the treated passage. Moreover, because of the constantly applied spring bias pressure of therings 30, good sealing contact is maintained between the rings 30 (and the prostheses) and the wall of body passage even if the passage is irregularly shaped. - With the positioning techniques described above it is possible to accurately position the prosthesis as desired within a body passage. This is because the prosthesis is maintained in a first compressed configuration as it is loaded and transported to the desired location so that it may be positioned without having to overcome friction between the prosthesis and the vessel passage. Once in its desired position, the prosthesis can be activated to engage the wall. It is also possible to reposition the prosthesis after the wall has been engaged if desired. This facilitates accurate positioning and avoids the need to attempt to reposition the prosthesis after it has irreversibly assumed the expanded configuration. In this way the surgeon has considerable control (through guide wire and tubes, for example) to accurately position a prosthesis at its most effective position.
- The
prosthesis 40 may also be utilized to replace a diseased portion of the ascending aorta as indicated in Fig. 24. Anannular ring 30 may be positioned in the remaining portion of the ascending aorta "D" after a portion of the aorta has been surgically removed. The clampingring 30 secures itself to the inside surface of the aorta "D" as described previously. The clamping ring is connected to a tubular, flexible sleeve orgraft 42 and thegraft 42 in turn connects to asewing ring 130 which facilitates connection to amechanical heart valve 132. The details of the valve and the graft will be known to those of skill in the art and are described in U.S. Patent No. 5,123,919, issued to Sauter et al., which is hereby expressly incorporated by reference herein. - The
graft 42 may be any of a variety of lengths depending on the amount of tissue involved. Thegraft 42 could extend further than is illustrated and may be considerably shorter. For example, where it is only necessary to replace the heart valve, thegraft 42 may amount to little more than a short flexible sleeve connecting themechanical valve 132 to thering 30. - While the present invention has been described with respect to a limited number of preferred embodiments, those skilled in the art will appreciate numerous modifications and variations therefrom. For example, while the device has been described in some instances as a vascular stent for treating aneurysms, the invention may be applicable to securing any device to an internal passage. In addition, it should be appreciated that certain embodiments of the present invention may have only one or more of the advantages described above or may instead have other advantages not specifically mentioned herein. It is intended that the appended claims cover all such modifications and variations as fall within the true scope of the appended claims.
Claims (24)
- A prosthesis comprising an annular, resilient element (30) and a tubular graft (42) having a pair of free ends, characterized in that said annular element is a ring (30) comprising a bundle of concentric windings formed of a strand of wire (32), said ring (30) being located at one of said free ends and coaxial with said tubular graft (42).
- The device of Claim 1 being adapted for insertion into a body passage wherein said annular, resilient element has an undeformed diameter greater than the diameter of said body passage.
- The device of Claim 1 or 2 wherein said annular resilient element (30) has a circular cross-section when undeformed.
- The device of Claim 1, 2 or 3 being adapted for insertion into a body passage comprising said annular resilient spring element (30) and said flexible, tubular graft (42) attached to said element (30), said element (30) having an undeformed diameter greater than the diameter of said graft (42).
- The device of any one Claims 1 to 4 wherein said graft (42) is formed from fabric.
- The device of any one of Claims 1 to 5, said tubular graft (42) having a first diameter proximate to said connection to said element (30) and a second diameter spaced away from said element (30), said first diameter being greater than said second diameter.
- The device of Claim 6 wherein said element (30) is connected to a fabric graft (42) at only one end of said fabric graft (42).
- The device of any one of Claims 1 to 6 including a pair of elements (30), said elements (30) being connected by said tubular graft (42).
- The device of any one of Claims 1 to 8 wherein the graft is a bifurcated graft (112) connected to said element (30), said bifurcated graft including a first tubular section connected to said element (30) and a pair of tubular sections (116) connected to said first tubular section, each of said pair of tubular sections (116) having free ends, and annular resilient deformable elements (114) connected to said free ends of said pair of tubular sections.
- The device of any one of the preceding Claims wherein said element (30) is formed by wrapping a plurality of windings of wire around a common core and connecting said windings together.
- The device of any one of Claims 1 to 10 wherein said wire is formed of a superelastic phase nickel-titanium alloy.
- The device of any of Claims 1 to 11 wherein said element (30) is situated inside a body passage in a C-shaped deformed configuration, folded about a diametric axis of said element.
- The device of any one of Claims 1 to 12 wherein said graft (42) tapers in diameter from an end connected to said element (30) to a reduced diameter and having a relatively constant diameter over a portion of the remainder of the graft (42).
- The device of any one of the preceding Claims including a device (56) for receiving a positioning wire (64).
- The device of Claim 14 wherein said device (56) includes an internal passage for releasably receiving said wire (64).
- The device of any one of the preceding Claims wherein the annular element (30) has a diameter of substantially 13 mm.
- The device of any of Claims 1 to 16 comprising a first prosthesis section (40) including a resiliently deformable annular spring element (30) and a tubular graft (42), said tubular graft (42) having a pair of free ends, said annular spring element (30) being connected to one of said free ends, and a second prosthesis section (106) arranged to engage the interior of said first prosthesis section (40) in common axial alignment therewith, said second prosthesis section (106) including a resiliently deformable annular spring element (30') adapted to engage an internal surface of said tubular graft (42) of said first prosthesis section (40) so as to adjust the resulting length of the prosthesis.
- The device of Claim 17 wherein said second prosthesis section (106) includes a tubular graft attached to said annular spring element(30'), said tubular graft having a pair of free ends, one of said free ends connected to said spring element (30') and the other of said free ends connected to a device (114) for retaining said free end in an open configuration.
- The device of Claim 17 or 18 wherein said device includes a pair of relatively rigid elements (114) defining a pair of independent passages into said free end of said second prosthesis section (112).
- The device of Claim 19 including third and fourth prosthesis sections (120) telescopically engaging said relatively rigid elements (114) on said free end of said second prosthesis section (112), each said third and fourth prosthesis sections including a pair of annular resilient deformable spring elements (30''; 30''') and a tubular graft, said spring elements attached to free ends of said tubular graft, at least one of said spring elements adapted to engage the interior of said second prosthesis section (112).
- The device of any one of Claims 17 to 20 wherein said second prosthesis section (112) includes a graft which has one end which defines a single passage and an opposite end which defines a pair of bifurcated passages which communicate with said single passage.
- The device of any of Claims 1 to 21 comprising a prosthetic heart valve (132), a flexible tubular sleeve having a first end connectable to said valve (132) and a second end, and a deformable, resilient annular ring (30) connected to said second end and arranged to connect said device to the interior surface of a portion of the ascending aorta.
- The device of any of Claims 1 to 22 further comprising a rigid member (31) longitudinally connecting said elements (30', 30''), said member being less flexible than said graft.
- The prosthesis of Claim 23 wherein said member is a wire (31) connecting said elements.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04021375A EP1595513A3 (en) | 1996-06-20 | 1997-06-19 | Prosthetic repair of body passages |
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1996124642 DE19624642B4 (en) | 1996-06-20 | 1996-06-20 | Vascular prosthesis and associated application device |
DE19624642 | 1996-06-20 | ||
EP19624642 | 1996-06-20 | ||
DE19633588A DE19633588A1 (en) | 1996-08-20 | 1996-08-20 | Clamping ring for retaining prosthesis in body passage, e.g. for repair of arterial aneurysms |
EP19633588 | 1996-08-20 | ||
DE19633588 | 1996-08-20 | ||
PCT/GB1997/001663 WO1997048350A1 (en) | 1996-06-20 | 1997-06-19 | Prosthetic repair of body passages |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP04021375A Division EP1595513A3 (en) | 1996-06-20 | 1997-06-19 | Prosthetic repair of body passages |
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EP0910309A1 EP0910309A1 (en) | 1999-04-28 |
EP0910309B1 true EP0910309B1 (en) | 2005-02-02 |
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EP04021375A Withdrawn EP1595513A3 (en) | 1996-06-20 | 1997-06-19 | Prosthetic repair of body passages |
EP97927277A Expired - Lifetime EP0910309B1 (en) | 1996-06-20 | 1997-06-19 | Prosthetic repair of body passages |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
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EP04021375A Withdrawn EP1595513A3 (en) | 1996-06-20 | 1997-06-19 | Prosthetic repair of body passages |
Country Status (11)
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US (7) | US8088155B1 (en) |
EP (2) | EP1595513A3 (en) |
JP (4) | JP4014226B2 (en) |
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AR (1) | AR007441A1 (en) |
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BR (1) | BR9709867A (en) |
CA (1) | CA2258732C (en) |
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WO (1) | WO1997048350A1 (en) |
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- 1997-06-19 WO PCT/GB1997/001663 patent/WO1997048350A1/en active IP Right Grant
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- 1997-06-19 EP EP97927277A patent/EP0910309B1/en not_active Expired - Lifetime
- 1997-06-20 AR ARP970102735A patent/AR007441A1/en not_active Application Discontinuation
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